The £18 jumpers, which are particularly aimed at men, come in two different designs – a fairisle pattern or Mr and Mrs Claus design - and are one size fits all.

Tesco will also reportedly give 100 per cent of the profits from the jumpers to CALM, and hope to raise £25,000 in total.

Simon Ginning, CEO of CALM says : "We're delighted to continue CALM's relationship with F&F at Tesco this festive period. Christmas is a fun, joyous time of year but we know it can be tough too.

"That's why we're encouraging people to get together and look out for their mates, families and loved ones - whether that be checking in with a text, catching up with someone you haven't seen for a while, or teaming up for a laugh in a festive two-headed jumper."

It was estimated last year that around nine million Brits would suffer from loneliness over Christmas.

According to Mind, keeping connected with people is a useful way to look after your mental health at Christmas.

On their website, they state: "Sometimes, the last thing we feel like doing is talking to people. You might be feeling anxious or overwhelmed, or just not very sociable - but connecting with other people has lots of benefits for your mental health.

"Talking through things that are worrying you can be really helpful, just sharing whatever it is can help you feel supported, and listened to. Christmas can also be a really good time to get in touch with people you might not speak to regularly - and you never know who might need a listening ear.

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"Connecting with people is also a really good chance to do some good. You could find somewhere to volunteer (maybe at your local Mind?) or offer to help out a friend of family member who's got a lot going on over Christmas, it's proven to help your mental health by boosting your self-esteem and improving your mood."